JP2021080005A - Desktop capping device - Google Patents

Abstract

To provide a capping device capable of capping a bottle can on a desktop.SOLUTION: Provided on a frame which can be installed on the desktop are: a can support part for supporting the bottle can; a capping head for attaching a cap to a mouth part of the bottle can; a head rotation mechanism for rotating the capping head; a head lifting/lowering mechanism for lifting/lowering the capping head; and a pair of guide posts for guiding lifting/lowering of the capping head. The head rotation mechanism includes a drive part in which an output shaft is horizontally disposed, and a rotation transmission mechanism for changing a rotation direction of the output shaft by a right angle and transmitting the same to a spindle shaft of the capping head. The spindle shaft is disposed in a position shifted in a horizontal direction from an extension direction of the output shaft, one guide post of the pair of guide posts is disposed behind the spindle shaft, and the other guide post is disposed on an opposite side with respect to the output shaft and shifted from the one guide post in a lengthwise direction of the output shaft.SELECTED DRAWING: Figure 2

Description

The present invention relates to a tabletop capping device that can be installed on a tabletop and is sealed by attaching a cap to the mouth of a bottle can filled with contents such as beverages.

As a container filled with contents such as beverages, a container is known in which a metal cap is attached to the opening of a bottle-shaped can (bottle can) to seal the container. In general, this bottle can is provided with a shoulder portion that gradually shrinks in diameter toward the upper side on the opening side of a cylindrical body portion having a bottom portion, and a mouth portion is provided on the shoulder portion via a neck portion. It is said that. Such a bottle can is formed into a bottomed cylindrical cylinder by subjecting a metal plate material (aluminum alloy material plate material) to a cutting process (squeezing process) and a DI process (squeezing and ironing process, Drawing & Ironing). , A shoulder portion is formed by subjecting the opening side of the body portion of the bottomed cylindrical cylinder to a diameter reduction process, and then a mouth portion having a bulging portion, a screw portion, a curled portion, etc. is formed. ..

A metal cap is attached to the mouth of this bottle can. Before being attached to the bottle can, this cap has a disk-shaped top plate portion and a tubular portion extending vertically from the outer peripheral edge thereof, and after being put on the mouth portion of the bottle can, the bottle can The tubular portion is machined along the threaded portion, and the lower end portion of the tubular portion is locked to the bulging portion. When opening the package, when the cap is rotated, the bridge portion formed in the tubular portion is cut, so that the tubular portion is separated into upper and lower parts and can be removed from the mouth portion.

As the prior art related to such a capping device, for example, the one described in Patent Document 1 is known.
The capping device is configured to include, for example, a pressure block and a capping roller. The capping roller has a first roll (thread roller) for forming a threaded portion on a side surface of a cap material and a second roll (lock) for winding a flare. It is equipped with a roller).

In this capping device, first, a cap material is put on the mouth of the bottle can, and the outer peripheral portion of the top plate of the cap material is pressed toward the bottom of the can by a pressure block to perform drawing processing. In this state, the capping roller is used. By rotating the first roller of the bottle can along the threaded portion of the bottle can, a threaded portion is formed around the cap material, and by rotating the second roller along the bulging portion of the mouth portion, the cap material of the cap material is formed. Tighten the flare. As a result, the cap is attached to the mouth of the bottle can.
This capping device can cap bottle cans continuously transported in a large-scale filling factory at high speed.

JP-A-2002-347890

By the way, there are cases where it is desired to produce a small number of bottle cans filled with beverages so that beverages such as craft beer can be taken home at restaurants and small-scale breweries, and a device capable of capping the bottle cans on a table is desired.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a capping device capable of capping a bottle can on a tabletop.

In the desktop capping device of the present invention, the outer peripheral surface of the cap material covered with the mouth portion of the bottle can is pressed against the screw portion of the mouth portion, and the screw portion corresponding to the screw portion is formed into the cap material to form the mouth portion. It is a capping device that attaches a cap to the part.
On a stand that can be installed on a table, a can support portion that supports the bottle can, and a capping head for mounting the cap by molding the screw portion on the cap material that covers the mouth portion of the bottle can. , A head rotation mechanism for rotating the capping head and a head elevating mechanism for raising and lowering the capping head are provided.
The head rotation mechanism has a drive unit in which the output shaft is arranged horizontally, and a rotation transmission mechanism that changes the rotation direction of the output shaft at a right angle and transmits the rotation to the spindle shaft of the capping head.
The spindle shaft is provided at a position displaced in the horizontal direction from the extension direction of the output shaft.

In this desktop capping device, since the spindle shaft is provided at a position shifted horizontally from the extension direction of the output shaft, the dimension in the length direction (depth dimension) of the output shaft becomes small, and the entire device is miniaturized. be able to. Therefore, a compact desktop capping device can be provided.

In this desktop capping device, the gantry is provided with at least a pair of guide posts for guiding the raising and lowering of the capping head, and one of the pair of guide posts is arranged behind the spindle shaft. The other guide post may be arranged on the opposite side via the output shaft and offset from the one guide post in the length direction of the output shaft.

The guide post can smoothly guide the vertical movement of the housing and suppress vibration, etc., and the guide post is arranged so as to match the arrangement of the spindle shaft in the length direction of the output shaft. The dimensions in the horizontal direction (width direction) orthogonal to the length direction of the can also be reduced, and the size can be further reduced.

In this desktop capping device, the output shaft is arranged so as to be offset from the center line in the left-right direction of the gantry, and the spindle shaft is arranged so as to be offset from the center line to the side opposite to the output shaft. It is good. Further miniaturization can be achieved.

In this desktop capping device, the rotation transmission mechanism includes a bevel gear mechanism that connects the output shaft and a rotation shaft arranged in the vertical direction, a spur gear fixed to the rotation shaft, and an outer peripheral portion of the spindle shaft. It has a gear that is formed in and meshes with the spur gear.

Rotation is transmitted by a bevel gear mechanism, spur gears, and a simple gear train of gears, and the transmission path is shorter than when transmitting between the output shaft and the spindle shaft via a horizontal transmission shaft. It is advantageous for compactness.

In this tabletop capping device, the can support portion is detachably provided on the gantry and has a support recess that supports the bottom of the bottle can, and gradually as the opening of the support recess toward the opening end. It is good to increase the diameter.

Even if some beverage spills from the opening when the bottle can filled with the beverage is installed in the can support portion, it can be stored in the liquid reservoir recess of the can support portion. Moreover, the can support can be removed from the gantry for cleaning. Since bottle cans filled with beverages are handled by hand at restaurants and the like, there is a risk of spilling the beverages and the area around the device is less likely to be soiled.

According to the present invention, it can be capped in a bottle can on a table, is compact, and can be installed in a narrow space.

It is a front view which made the half of the bottle can and the cap material to which the tabletop capping device of the embodiment of this invention is applied in the cross section. It is a front view of the tabletop capping device of an embodiment. It is a side view of the tabletop capping device of FIG. It is the top view of the tabletop capping device of FIG. It is an enlarged sectional view of the head support shaft of the desktop capping device of FIG. It is a front view which shows the main part of a capping head. FIG. 6 is a view of the capping head of FIG. 6 as viewed from the bottom surface. FIG. 5 is an enlarged cross-sectional view of a can support portion provided in the desktop capping device of FIG. It is a front view of the rotating disk provided in the output shaft. It is a front view of the control panel.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Bottle can]
The bottle can 1 is made of an aluminum alloy, and as shown in FIG. 1, has a bottomed tubular can body 2 and a tapered shoulder portion 3 whose diameter is gradually reduced upward from the upper end of the can body 2. It is formed in a bottle shape having a tubular small-diameter neck portion 4 extending upward from the upper end of the shoulder portion 3 and a mouth portion 5 formed above the neck portion 4. The mouth portion 5 has a curl portion 6 formed at its open end, a male screw portion 7 formed below the curl portion 6, and an annular bulging portion formed by bulging below the male screw portion 7. 8 and are formed. This bottle can has a diameter of, for example, 38 mm (nominal diameter, specifically, the outer diameter of the bulging portion 8 is 36.0 mm or more and 40.0 mm or less), and the can body portion 2 has a diameter of 211 (nominal diameter. 64.24 mm or more and 68.24 mm or less), and the total height is 128 mm or more and 233 mm or less.

[cap]
The cap material 11 which is attached to the mouth portion 5 of the bottle can 1 and serves as a cap 10 is made of an aluminum alloy and is formed in a bottomed tubular shape having a top plate portion 12 and a tubular portion 13. The tubular portion 13 is formed with a knurl 14, a groove 15, a bridge portion 16, a flare 17, and the like. Further, a liner 18 which is a sealing material is provided inside the top plate portion 12, and after filling the bottle can 1 with the contents, the bottle can 1 is covered with the mouth portion 5 and screwed along the male screw portion 7. At the same time, the flare 17 is wrapped around the bulging portion 8 to seal the mouth portion 5. Hereinafter, the material before mounting on the bottle can 1 is referred to as a cap material 11, and the material on which the threaded portion is formed after mounting is referred to as a cap 10.

[Capping device]
2 to 4 show the overall configuration of the capping device 20 for mounting the cap material 11 on the mouth portion 5 of the bottle can 1.
The capping device 20 caps the bottle can 1 held in a fixed state by raising and lowering and rotating the capping head 30, and is a stand 50 that can be installed on a table such as a counter or a table of a restaurant. A capping head 30, a head rotation mechanism 60 for rotating the capping head 30, and a head elevating mechanism 70 for raising and lowering the capping head 30 are provided. In this embodiment, the head rotation mechanism 60 and the head elevating mechanism 70 have the same drive unit 75. In addition, in FIGS. 2 and 3, half of the bottle can 1 and the cap material 11 are shown in cross section, and the capping head 30 is omitted in FIG.

(Detailed configuration of capping head 30)
The capping head 30 is provided with a pressure block 31 and first rolls 34 and second rolls 35 at the lower ends of the vertically held head support shaft unit 80.

As shown in FIG. 5, the head support shaft unit 80 is formed by arranging a plurality of vertical shafts coaxially, and from the center position thereof, a pressure shaft 81, a tubular spindle shaft 82 on the outside thereof, and a tubular spindle shaft 82 on the outside thereof. A tubular sleeve shaft 83 is provided. The pressure shaft 81 and the spindle shaft 82 are fixed at relative positions in the vertical direction, and the sleeve shaft 83 is supported so as to be relatively movable in the vertical direction with respect to the pressure shaft 81 and the spindle shaft 82. Further, the spindle shaft 82 between the pressure shaft 81 and the sleeve shaft 83 is supported so as to be relatively rotatable. A coil spring 84 is provided between the pressure shaft 81 and the sleeve shaft 83, and the coil spring 84 is compressed when the sleeve shaft 83 descends with respect to the pressure shaft 81 (and the spindle shaft 82). Therefore, an urging force that restores the relative positional relationship in the vertical direction to the original state is generated.

A tubular cone cam 85 is fixed to the lower end of the sleeve shaft 83. Then, in the head support shaft unit 80, the cone cam 85 of the sleeve shaft 83 is provided at the uppermost position at the lower end thereof, then the lower end portion of the spindle shaft 82 projects downward from the lower end of the cone cam 85, and further, the pressure shaft 81 The lower end portion protrudes downward from the lower end portion of the spindle shaft 82, and the lower end portion of the pressure shaft 81 is arranged at the lowest position.

A pressure block 31 is provided at the lower end of the pressure shaft 81. As shown in FIG. 6, the pressure block 31 is formed in a tubular shape with the upper end closed, and the pressure block insert 36 is mounted inside the pressure block 31 via a spring 37, and the pressure block insert 36 is mounted. Is provided so as to be movable relative to the pressure block 31 in the vertical direction. Then, by covering the cap material 11 with the pressure block 31, the top plate portion 12 of the cap material 11 is urged by the spring 37 due to the vertical load applied to the pressure shaft 81, and the bottom portion of the bottle can 1 is passed through the pressure block insert 36. Pressed in the direction, the cap material 11 is held in a state of being covered with the mouth portion 5 of the bottle can 1. Then, a step portion 12a is formed on the outer peripheral side of the top plate portion 12 pressed by the pressure block 31, and the liner 18 can be brought into close contact with the curl portion 6 of the mouth portion 5.

The first roll 34 and the second roll 35 are provided at the tip end portion (lower end portion) of the spindle shaft 82 of the head support shaft unit 80, and the first roll 34 forms a screw portion on the cap material 11 and the second roll The flare 17 is wound around the bulging portion 8 of the bottle can 1 by 35. At least one of each of the first roll 34 and the second roll 35 is required, and in the capping head 30 of the capping device 20 of the present embodiment, as shown in FIG. 7, the first roll 34 and the second roll 34 are required. Two rolls 35 and two rolls 35 are provided alternately in the circumferential direction.

The first roll 34 and the second roll 35 are provided at the tip of the bracket arm 38 fixed to the spindle shaft 82 of the head support shaft unit 80. The bracket arm 38 is provided for each of the rolls 34 and 35, protrudes outward in the radial direction from the spindle shaft 82, and a vertical arm shaft 39 is rotatably supported at the tip thereof, and the arm shaft 39 is supported. The base end portion of the horizontal roll support arm 40 is fixed to the lower end portion of the roll support arm 40, and the rolls 34 and 35 are rotatably supported by the tip end portion of the roll support arm 40. Therefore, each of the rolls 34 and 35 can be horizontally swiveled around the arm shaft 39 by the roll support arm 40.

A torsion spring 41 is attached to each arm shaft 39, and both ends of the torsion spring 41 are fixed to the bracket arm 38, and the urging force around the arm shaft 39 by the torsion spring 41 causes the torsion spring 41 to pass through the roll support arm 40. The first roll 34 and the second roll 35 are always urged toward the center of the capping head 30 (clockwise around the arm shaft 39 in FIG. 7).

Further, a base end portion of a horizontal cam follower support arm 42 is fixed to the upper end portion of each arm shaft 39, and a cam follower 43 is rotatably attached to the tip end portion of the cam follower support arm 42.
When the cam follower 43 is in contact with the outer peripheral surface of the cone cam 85 at the lower end of the sleeve shaft 83 of the head support shaft unit 80 and is in contact with the enlarged diameter portion 85a at the lower end of the cone cam 85, the roll support arm 40 is in contact with the torsion spring 41. It was held in the outer position (position shown in FIG. 7) against the urging force, the cone cam 85 descended with respect to the pressure shaft 81 (and the spindle shaft 82), and the cam follower 43 moved to the reduced diameter portion 85b of the cone cam 85. Occasionally, the roll support arm 40 is adapted to rotate toward the center of the capping head 30 by the urging force of the torsion spring 41.

The first roll 34 and the second roll 35 are formed in a disk shape, and by rotating horizontally via the roll support arm 40, the outer peripheral surface of the tubular portion 13 of the cap material 11 is laterally turned to the bottle can 1 at the outer edge portion thereof. Press against the mouth 5 of.
Further, both rolls 34 and 35 are attached to the lower ends of the support shaft 45 supported by the roll support arm 40, respectively, as shown in FIG. 6, and move up and down with respect to the roll support arm 40 via the support shaft 45. It is supported so that it can move in the direction. A coil spring 46 is attached to the support shaft 45, and the coil spring 46 urges both rolls 34 and 35 to be pulled upward.

Then, the roll support arm 40 is swiveled to come into contact with the surface of the cylinder portion 13 of the cap material 11, and the first roll 34 rolls on the surface of the cylinder portion 13 around the mouth portion 5 of the bottle can 1 to screw the screw. By moving from the upper side (opening side) to the lower side along the thread valley of the portion 7, the shape of the threaded portion 7 is transferred and the threaded portion is machined on the tubular portion 13, and the second roll 35 is used as a cap material. By rolling the outer peripheral surface of the mouth portion 5 while pressing the flare 17 of 11 against the bulging portion 8 and deforming the flare 17, the flare 17 is caught in the bulging portion 8.

(Mount)
As shown in FIGS. 2 to 4, the gantry 50 is supported by a base plate 51, a pair of guide posts 52A and 52B vertically erected on the base plate 51, and guide posts 52A and 52B so as to be movable up and down. It includes a housing 53 and a cover 54 that surrounds a lower portion of the housing 53 on the base plate 51. A can support base (can support portion) 55 that holds the bottom of the bottle can 1 is fixed to the base plate 51.
The housing 53 is formed in a rectangular parallelepiped box shape having a front wall 53a, a rear wall 53b, an upper wall 53c, a lower wall 53d, and a side wall 53e, and guide posts 52A and 52B penetrate through the lower wall 53d and are below. The tip portions (upper end portions) of the guide posts 52A and 52B are inserted into the guide sleeve 56 fixed to the wall 53d.

A drive unit 75 is fixed to the outer surface of the rear wall 53b of the housing 53, and a head rotation mechanism 60 connected to the drive unit 75 is housed in the housing 53. Further, the sleeve shaft 83 held by the upper wall 53c and the lower wall 53d of the housing 53 is vertically fixed. The lower end of the sleeve shaft 83 penetrates the lower wall 53d of the housing 53 and projects downward, and the spindle shaft 82 of the capping head 30 is rotatably supported inside the sleeve shaft 83, and pressure is applied in the spindle shaft 82. The shaft 81 is supported so as to be movable up and down.

In the can support base 55, a tapered portion 55b whose diameter is expanded upward is formed in the opening of the support recess 55a in which the bottom of the bottle can 1 is supported in a fitted state, and the bottom of the support recess 55a is formed. A liquid reservoir recess 55c having a smaller diameter is formed. The can support 55 can be attached to and detached from the base plate 51.
The cover 54 will be described later.

(Drive part)
The drive unit 75 is a motor in the embodiment, and is fixed to the outer surface of the rear wall 53b of the housing 53 with a horizontal output shaft 76 facing the front-rear direction of the gantry 50. Further, the output shaft 76 projects in both the front and rear directions of the drive unit 75, and the front end portion is a front output shaft 76a and the rear end portion is a rear output shaft 76b. The front output shaft 76a penetrates the rear wall 53b of the housing 53 and is connected to the head rotation mechanism 60 in the housing 53, and the rear output shaft 76b is connected to the head elevating mechanism 70.

(Head rotation mechanism)
The front output shaft 76a of the drive unit 75 inserted into the housing 53 is rotatably supported by a bearing 77 fixed to the upper wall of the housing 53, and the first bevel gear 61 is fixed to the tip thereof. The first bevel gear 61 is meshed with the second bevel gear 63 integrated with the vertical rotating shaft 62 rotatably supported between the upper wall 53c and the lower wall 53d of the housing 53 so as to intersect at a right angle. .. A spur gear 64 is fixed to the rotating shaft 62.
Further, a serration gear 65 along the vertical direction is formed on the outer peripheral portion of the spindle shaft 82 of the capping head 30, and a part of the serration gear 65 faces the notch window 86 of the sleeve shaft 83. The serration gear 65 and the spur gear 64 are meshed with each other through the window 86.
Then, when the output shaft 76 is rotated by the drive unit 75, the rotating shaft 62 is rotated by the double bevel gears 61 and 63, and the spindle shaft 82 connected to the spur gear 64 is rotated.

(Head lifting mechanism)
A rotating disk 71 is integrally fixed to the rear output shaft 76b of the drive unit 75, and the crankshaft 72 is parallel to the rear output shaft 76b at a position eccentric with respect to the output shaft 76 in the rotating disk 71. (See FIG. 9), the tip of the link rod 73 is rotatably attached to the crankshaft 72. The base end of the link rod 73 is rotatably connected to the tip of the stand shaft 78 via a rotatable joint portion 74. The stand shaft 78 is vertically fixed on the base plate 51 of the gantry 50.
The drive unit 75 is provided with a limit switch 79 arranged above the rotary disk 71 toward the rotary disk 71, and detects the limit switch 79 on the outer peripheral surface of the rotary disk 71 at a position 180 ° opposite to the crankshaft 72. The dog 71a is fixed.

(Plane arrangement of each component)
In a plan view, the output shaft 76 of the drive unit 75 is located in the front-rear direction at a position slightly deviated from the center line C (which is also the center line of the housing 53) in the left-right direction of the gantry 50 (a position deviated to the right in FIG. 4). It is provided along.
On the other hand, the head support shaft unit 80 provided with the sleeve shaft 83 is provided perpendicular to the center line of the gantry 50 at a position shifted to the opposite side of the front output shaft 76a (a position shifted to the left in FIG. 4). .. The bevel gears 61, 63 and the spur gear 64 rotated by the front output shaft 76a have their rotation centers arranged on an extension of the front output shaft 76a in a plan view. Therefore, the serration gear 65 formed on the spindle shaft 82 in the sleeve shaft 83 is connected to the spur gear 64 at an angle inclined with respect to the extension line of the front output shaft 76a.

Further, a pair of guide posts 52A and 52B for guiding the vertical movement of the housing 53 are provided on both left and right sides of the housing 53. Of these, one guide post 52A is provided at a position on the right side of the rotating shaft 62, but on the opposite side (left side of the rotating shaft 62), a sleeve shaft 83 is provided with respect to the center line C of the housing 53. Since they are arranged so as to be offset, the other guide post 52B is provided at an obliquely rear position of the sleeve shaft 83. Therefore, one guide post 52A is arranged closer to the front side of the housing 53, and the other guide post 52B is arranged closer to the rear side of the housing 53. That is, both guide posts 52A and 52B are arranged at substantially the same distance from the center line C in the left-right direction of the housing 53, but are displaced in the front-rear direction from the center of the housing 53 in opposite directions (front-back direction). Are arranged.

(Cover of the gantry)
The cover 54 has a front door 54a, both side walls 54b, and a rear wall 54c so as to surround the lower space of the housing 53 on all sides of the base plate 51. The cover 54 is made of a transparent resin so that the inside can be visually recognized. In this case, the front door 54a is arranged in front of the housing 53, and the rear wall 54c is arranged behind the drive unit 75. Further, although the side walls 54b are arranged below the housing 53, they are set at a height lower than the front door 54a and the rear wall 54c so as not to hinder the vertical movement of the housing 53.
The front door 54a is connected to the front end of one side wall 54b by a hinge 57, and can be fixed to the front end of the other side wall 54b by a magnet 58, and a handle 59 for opening / closing operation is provided on the front surface. There is.

A control panel 90 is connected to the capping device 20, and as shown in FIG. 10, the control panel 90 is provided with a switch 91 for starting and stopping the drive unit 75, an emergency stop button 92, and the like. Be done. Further, a sensor (door switch: not shown) for detecting the opening / closing of the front door 54a is provided, and the capping device 20 can operate with the front door 54a closed, and the front door 54a is open. Interlock control is performed so that it cannot operate in the state. Further, in FIG. 3, reference numeral 93 is a damper (gas spring) for absorbing vibration provided between the housing 53 and the base plate 51.

The capping device 20 configured in this way can be installed and used together with the gantry 50 on a table or the like.
When the operation of the capping device 20 is stopped, the housing 53 is arranged at the uppermost position, and the bottle can 1 is covered with the cap material 11 on the mouth 5 of the bottle can 1 filled with the beverage. Is installed on the can support 55, the front door 54a of the cover 54 is closed, and then the switch 91 is turned on to activate the drive unit 75. The output shaft 76 rotates and is connected to the front output shaft 76a along with the rotation. The capping head 30 is rotated via the spindle shaft 82 by the head rotation mechanism 60.

On the other hand, as the output shaft 76 rotates, a rotational force acts on the rotating disk 71 of the head elevating mechanism 70 connected to the rear output shaft 76b on the side opposite to the head rotating mechanism 60. Since the link rod 73 is fixed to the crankshaft 72 in an eccentric state from the output shaft 76 and the vertical movement of the crankshaft 73 is restricted, the rotating disk 71 tries to turn around the crankshaft 72. .. The housing 53 to which the drive unit 75 is fixed is restricted in the moving direction only in the vertical direction by the guide posts 52A and 52B, and the link rod 73 is connected to the upper end of the stand shaft 78 via the joint portion 74. Therefore, the crankshaft 72 cannot turn around the output shaft 76, and moves in the vertical direction and in the horizontal direction due to the swing by the link rod 73.

Specifically, assuming that the output shaft 76 is arranged directly above the crankshaft 72 as the initial position, the output shaft 76 rotates and the crankshaft 72 swings the link rod 73 to output, for example. By moving to the left side of the shaft 76, the output shaft 76 moves downward. When the output shaft 76 further rotates, the output shaft 76 further lowers, and the crank shaft 72 is arranged above the output shaft 76 while swinging the link rod 73 accordingly. After that, the crankshaft 72 moves to the right side of the output shaft 76 while swinging the link rod 73, so that the output shaft 76 rises, and further, the output shaft 72 is inserted directly under the output shaft 76. When the 76 is raised and placed at the initial position, one rotation of the output shaft 76 is completed.

With such relative movement of the output shaft 76 and the crankshaft 72, the housing 53 integrated with the output shaft 76 (drive unit 75) moves up and down. The housing 53 is lowered, the pressure block 31 of the capping head 30 comes into contact with the cap material 11 covering the bottle can 1, and the top plate portion 12 of the cap material 11 is pressed toward the bottom of the bottle can 1 to cap. A step portion 12a is formed on the peripheral edge portion of the material 11.

Contrary to the housing 53 that descends with the formation of the step portion 12a, the pressure block 31, the pressure shaft 81, the capping head 30 and the spindle shaft 82 are suppressed from descending, and the load of the coil spring 84 incorporated in the head support shaft unit 80 is applied. It is hung vertically on the cap material 11 and the bottle can 1. Then, the cam follower 43 of the capping head 30 in contact with the outer peripheral surface of the cone cam 85 at the lower end of the sleeve shaft 83 loses the support from the inside by the enlarged diameter portion 85a due to the lowering of the cone cam 85, and the height of the reduced diameter portion 85b. The cam follower support arm 42 is rotated by the urging force of the torsion spring 41 of the arm shaft 39, and the cam follower 43 moves toward the center of the capping head 30. Since the roll support arm 40 is provided at the lower end of the arm shaft 39, the roll support arm 40 also moves toward the center of the capping head 30, and the first roll 34 and the second roll 35 at the tip thereof are moved. Each comes into contact with the outer peripheral portion of the cap material 11.

The first roll 34 is pressed against the tubular portion 13 of the cap material 11 and moves along the screw portion 7 of the bottle can 1 from below the curl portion 6 of the mouth portion 5 toward the bulging portion 8 side. That is, by rotating the first roll 34 along the threaded portion 7, a threaded portion is formed on the cap material 11 so as to follow the threaded portion 7 of the bottle can 1, as shown in FIG.
On the other hand, the second roll 35 presses the cap material 11 against the bulging portion 8 of the bottle can 1 and rolls the flare 17 to the lower side of the bulging portion 8 while rolling in the circumferential direction along the bulging portion 8. Involve it so that it bites into it.

Since the threaded portion 7 of the bottle can 1 is formed, for example, two or more turns, the capping head 30 makes two turns after the first roll 34 and the second roll 35 come into contact with the cap material 11 and start forming the cap material 11. Rotate up. Capping starts in the middle of the descent of the housing 53, exceeds the bottom dead center, and the capping operation is performed until the middle of the ascent. After the pressure block 31 forms the step portion 12a on the cap material 11, the pressure block 31, the pressure shaft 81, the capping head 30, and the spindle shaft 82 do not move up and down, whereas the sleeve shaft 83 and the cone cam 85 together with the housing 53. Moves up and down. In this case, since the serration gear 65 meshing with the spur gear 64 is formed in the housing 53 along the vertical direction, the length of the serration gear 65 accompanies the relative vertical movement of the spindle shaft 82 and the sleeve shaft 83. While sliding the meshing position in the direction, the meshing state is maintained, and the rotational force from the drive unit 75 is transmitted to the first roll 34 and the like.

On the other hand, in the head elevating mechanism 70, the rear output shaft 76b rotates around the crankshaft 72 of the rotating disk 71, whereas the housing 53 moves only in the vertical direction due to the guide posts 52A and 52B. Although regulated, as described above, since the link rod 73 can swing with respect to the stand shaft 78 by the joint portion 74, the rear output shaft 76b can be moved by swinging the crankshaft 72 in the left-right direction. Can only be in the vertical direction.
In the present embodiment, the capping operation for one bottle can 1 is completed by repeating the above series of steps twice (the housing 53 moves up and down twice).

The capping device 20 configured in this way arranges the bottom of the bottle can 1 filled with the beverage on the can support 55 on the base plate 51, covers the mouth 5 with the cap material 11, and then drives the capping head. The cap material 11 is fixed to the mouth portion 5 of the bottle can 1 by 30.

The capping device 20 is installed on a counter, a table, or the like of a restaurant, and is used for capping on a bottle can 1 filled with craft beer or the like. In this case, the output shaft 76 of the drive unit 75 is arranged so as to be offset from the center line C in the left-right direction of the housing 53, and further, the head support of the capping head 30 with respect to the extension direction of the output shaft 76 of the drive unit 75. Since the shaft unit 80 is arranged on the opposite side of the output shaft 76 with respect to the center line C so that the shaft unit 80 is displaced, the dimensions in the front-rear direction are formed to be smaller by that amount, and the guide posts 52A and 52B on both sides are formed. However, since the head support shaft unit 80 is arranged so as to be offset in the front-rear direction between the rear position of the head support shaft unit 80 which is arranged on one side in the left-right direction and the position slightly forward of the head support shaft unit 80, when arranging them side by side in the left-right direction Compared with this, the dimensions in the left-right direction can also be reduced. Therefore, it can be installed without protruding even in a narrow space such as a counter or a table.

On the other hand, since the guide posts 52A and 52B are provided one by one on both side portions and are arranged so as to be offset in the front-rear direction, the runout is less likely to occur in both the left-right direction and the front-rear direction.
Therefore, even though it is a compact device, it is less likely to run out due to a load or rotational force during capping, and can be installed stably.
Further, since a damper (gas spring) 93 is provided between the housing 53 and the base plate 51, the damper 93 supports the weight of the housing 53 and the like, and suppresses the re-vibration of the vertical movement thereof. be able to.

When filling a bottle can with craft beer at a restaurant or the like, in order to prevent air from remaining in the bottle can 1 after capping, it is necessary to overflow the craft beer foam from the mouth 5 of the bottle can 1. Good. In that case, bubbles and beer liquid flow down from the bottle can 1 during capping, but when the bottom of the bottle can 1 is supported in the support recess 55a, the tapered portion 55b expands in diameter upward. Therefore, even if bubbles of craft beer or the like overflow from the mouth portion 5 of the bottle can 1, it can be received by the tapered portion 55b, and the liquid that has flowed down can be stored in the liquid reservoir recess 55c. Therefore, the area around the device is less likely to be soiled, and the can support base 55 can be attached to and detached from the base plate 51, so that cleaning is easy.

The present invention is not limited to the configuration of each of the above embodiments, and various changes can be made to the detailed configuration without departing from the spirit of the present invention. For example, as a bottle can, a bottomed cylindrical cylinder is formed in advance and the open end thereof is molded so as to reduce the diameter, but the cylinder includes a cylinder having no bottom, and the shoulder portion is formed. After molding, a separately formed bottom lid may be wrapped around the body of the cylinder.
Although the can support is provided on the base plate 51 of the gantry 50, the bottle can 1 may be placed on the base plate. In that case, the support recess 55a, the tapered portion 55b, and the liquid storage recess are placed on the base plate. 55c may be formed.

1 Bottle can 2 Can body 3 Shoulder 4 Neck 5 Mouth 6 Curl 7 Male thread 8 Bulge 10 Cap 11 Cap material 12 Top plate 12a Step 13 Cylinder 17 Flare 18 Liner 20 Capping device 30 Capping head 31 Pressure block 34 1st roll 35 2nd roll 36 Pressure block insert 37 Spring 38 Bracket arm 39 Arm shaft 40 Roll support arm 41 Torsion spring 42 Cam follower support arm 43 Cam follower 45 Support shaft 46 Coil spring 50 Stand 51 Base plate 52 Guide post 53 Housing 54 Cover 55 Can support stand (can support part)
55a Support recess 55b Tapered portion 55c Liquid reservoir 56 Guide sleeve 60 Head rotation mechanism 61 1st bevel gear 62 Rotating shaft 63 2nd bevel gear 64 Spur gear 65 Serration gear 70 Head elevating mechanism 71 Rotating disk 72 Crank shaft 73 Link rod 74 Joint 75 Drive 76 Output shaft 76a Front output shaft 76b Rear output shaft 77 Bearing 78 Stand shaft 80 Head support shaft Unit 81 Pressure shaft 82 Spindle shaft 83 Sleeve shaft 84 Coil spring 85 Cone cam 86 Notched window

Claims (5)

A capping device that forms a screw portion corresponding to the screw portion into the cap material while pressing the outer peripheral surface of the cap material covering the mouth portion of the bottle can against the screw portion of the mouth portion, and attaches the cap to the mouth portion. And
On a stand that can be installed on a table, a can support portion that supports the bottle can, and a capping head for mounting the cap by molding the screw portion on the cap material that covers the mouth portion of the bottle can. , A head rotation mechanism for rotating the capping head and a head elevating mechanism for raising and lowering the capping head are provided.
The head rotation mechanism has a drive unit in which the output shaft is arranged horizontally, and a rotation transmission mechanism that changes the rotation direction of the output shaft at a right angle and transmits the rotation to the spindle shaft of the capping head.
The desktop capping device is characterized in that the spindle shaft is provided at a position displaced in the horizontal direction from the extension direction of the output shaft. The gantry is provided with at least a pair of guide posts for guiding the raising and lowering of the capping head.
Of the pair of guide posts, one of the guide posts is arranged behind the spindle shaft, the other guide post is on the opposite side via the output shaft, and the length of the output shaft is longer than that of the one guide post. The desktop capping device according to claim 1, wherein the desktop capping device is arranged so as to be offset in the vertical direction. The claim is characterized in that the output shaft is arranged so as to be offset from the center line in the left-right direction of the gantry, and the spindle shaft is arranged so as to be offset from the center line to the side opposite to the output shaft. Item 2. The desktop capping device according to item 1 or 2. The rotation transmission mechanism is formed on a bevel gear mechanism that connects the output shaft and a rotation shaft arranged in the vertical direction, a spur gear fixed to the rotation shaft, and an outer peripheral portion of the spindle shaft. The desktop capping device according to any one of claims 1 to 3, further comprising a gear that meshes with the gear. The can support portion is detachably provided on the gantry and has a support recess for supporting the bottom of the bottle can, and the diameter of the opening of the support recess gradually increases toward the opening end. The desktop capping device according to any one of claims 1 to 4, wherein the desktop capping device is characterized.

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